Gin-rib structure



H. D. CLARKE.

GIN RIB STRUCTURE.

APPLICATION FILED Nov. 6, 1920.

1,407,984. Pawnted Feb. 28, 1922'.

PATENT OFFICE.

' HENRY D. CLARKE, 0F DALLAS, TEXAS.

GIN-RIB STRUCTURE.

Specification of Letters Patent.

Patented Feb. 28, 1922.

Application filed November 6, 1920. Serial No. 422,150.

To all whom it may concern:

Be it known that I, HENRY D. CLARKE, a citizen of the United States, residin at Dallas, in the county of Dallas and tate of Texas, have invented certain new and useful Improvements in Gin-Rib Structures, of which the following is a specification.

This invention relates to new and useful improvements in gin rib structures.

It has been customary to cast gin ribs separately and singularly and to install each rib individually. This practice has two objections, one of which is the time and labor required to install the ribs, and the other of which is, the tendency of the cast ribs to break.

The object of my invention is to overcome these objections and provide a more eflicient and satisfactory arrangement, by constructin rib sections, each including a plurality of ribs and by stamping or cutting the sections from metal plates or sheets, although the sections could be cast. The object is also attained by fastening to the .ribs, wear strips, which may be renewed,

thus protecting the ribs from wear.

An apparatus designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, in which an example of the invention is shown, and wherein:

Fig. 1 is a vertical sectional View of a portion of a cotton gin equipped withribs constructed in accordance with my 1nvention Fig. 2 is a front elevation of a rib as sembly or grate,

Fig. is a side elevation of one of the rib sections,

Fig. 4 is an elevation of the same,

Fig. 5 is a cross-section taken on the line 5-5 of Fig. 4:,

Fig. 6 is a side elevation of a huller rib section, and

Fig. 7 is an elevation of the same.

In the drawings the numeral 10 desigral and uniform structure.

nates a gin rib curved in the usual manner. A plurality of these ribs are united at their upper ends by a transverse plate or web 11; whlle a similar web 12 unites the lower ends of the said ribs. Each web has a pair of screw holes 13. In the drawings I have shows live ribsextending between the webs, but this number may be varied if necessary. The ribs and webs constitute a secribs have longitudinal spaces tion and the 14 therebetween for receiving the gin saws. Each outer rib is set inwardly of the ends of the Webs, the distance of half a space so that when two sections are assembled, the space between the adjacent end ribs thereof Wlll be equal to the other spaces.

The rib sections are fastened in the gin by means of screws 15 passing through the holes 13. The upper webs 11 are fastened to upper support A and. the webs 12 are fastened to the lower support B. It will be seen that the saws C pass through the spaces 14 near the upper ends of the ribs and under the roll box. This is where the greatest wear is had and is also where the ribs frequently break. On each rib, a wear strlp 16 is fastened by screws 17, at its upper end just below the web 11. These strips are slightly wider than the ribs and overhang the side edges thereof. The lower ends of the strips are reduced so as not to offer obstructions to the cotton.

It will be seen that the sections may be fastened in the gin much more expeditiously and evenly than individual ribs. Each sec tion may be stamped or pressed from a metal plate or sheet, thus making an inte- While it might be possible to cast the sections and the invention includes the same, the stamped section'is preferable because of its resistance to fracture and its economic production. The wear strips may be readily replaced and may be of a harder metal if desired.

In Figs. 6 and 7 I have shown the invention embodied in the huller ribs of a gin. Each section includes ribs 10 having spaces 14 therebetween. The ribs are convature of the upper portion of each rih for securing the wear strip conforming to the cur and snugly contacting therewith through- 10 out the entire length of the wear strip and projecting laterally beyond the rib upon opposite sides thereof, and elements for clamping both ends of each wear strip to the rib carrying the Seine.

In testimony whereof I afiix my signature.

HENRY D. CLARKE. 

